Emkarate® RL 68H is an ISO VG 68 synthetic polyol ester (POE) lubricant formulated specifcally for use in refrigeration and air-conditioning compressors using HFC refrigerants. This product provides effective wear protection for steel and aluminum surfaces for increased system life and improved effciency and is suitable for both initial fll and service fll. The combination of low temperature characteristics and unparalleled chemical and thermal stability enable the use of Emkarate® RL 68H over a wide operating temperature range.